Kafka Streams Interactive Queries: Building Distributed Remote Queries

In modern stream processing, microservices often scale out across multiple instances, making it a challenge to access state data stored locally on individual nodes. This text-only course guides you through the architecture and implementation of Kafka Streams interactive queries, enabling you to query distributed state stores seamlessly. You will start with the fundamental concepts of stateful processing, explore how local state stores work, and then progress to building a robust remote query layer. By completing this course, you will understand how to locate state stores across active instances, route queries to the correct node, and handle failovers gracefully. What you'll learn: - Understand the core architecture of stateful stream processing and local state stores - Implement metadata queries to discover active Kafka Streams instances and their assigned partitions - Configure custom RPC layers to route query requests and aggregate remote data - Handle dynamic scaling, rebalancing, and node failures to maintain query availability - Practice building a cohesive API gateway that unifies local and remote queries into a single endpoint This course begins with essential definitions of stateful stream processing before guiding you through the step-by-step design of a distributed query architecture. It is designed for software engineers and data developers with a basic understanding of Kafka Streams who want to master advanced distributed querying. Jump in to start building highly available, queryable streaming applications today.